- Small sample size
- Only included infants who were hospitalized
- Lack of including asymptomatic infants


University of Michigan - Ann Arbor

Only 9 infants were identified with COVID-19 in China between December 8, 2019 and February 6, 2020. This small number of infected infants is potentially due to infants having a lower risk of COVID-19 exposure or due to infants potentially having asymptomatic COVID-19.

Novel Coronavirus Infection in Hospitalized Infants Under 1 Year of Age in China

Wei, M., Yuan, J., Lui, Y., Fu, T., Yu, X., Zhang, Zhang, ZJ. (2020). Novel Coronavirus Infection in Hospitalized Infants Under 1 Year of Age in China. Journal of the American Medical Association, 323(13), 1313-1314.
https://doi.org/10.1001/jama.2020.2131 

https://jamanetwork.com/journals/jama/fullarticle/2761659

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